Lisa Troubleshooting and Repair

CPU Error 40 during POST (MMU issue)

Started by ried

Replies: 1
Views: 42,362

March 16, 2025, 02:46:54 PM
by sigma7

Installing 800k/1.44mb Apple floppy drive

Started by Zhinu

Replies: 1
Views: 2,753

June 26, 2026, 02:47:02 PM
by sigma7

Lisa 2 video issue - vertically duplicated image with diagonal lines

Started by snua12

Replies: 1
Views: 50,061

July 08, 2025, 03:18:33 PM
by patrick

Track zero sensor of the ST-506 in a Profile

Started by pintoguy

Replies: 1
Views: 12,905

November 26, 2025, 12:26:04 PM
by pintoguy

Lisa Widget Drive Repair -- Errors 81, 82, 85 and one successful boot

Started by gbrady

Replies: 1
Views: 38,016

June 18, 2024, 04:49:34 PM
by patrick

Error 82, can someone explain it in layman's terms

Started by brgl1983_00

Replies: 1
Views: 52,279

October 08, 2021, 03:08:30 AM
by patrick

Twiggy Digital Board Rev H1 Schematic

Started by sigma7

Replies: 1
Views: 40,438

February 13, 2025, 04:15:38 PM
by sigma7

Restore info on CPU/IO/PSU list of caps and other parts needed.

Started by bmwcyclist

Replies: 0
Views: 33,876

March 04, 2025, 12:10:58 PM
by bmwcyclist

Track 0 sensor on hard drive mechanisms

Started by stepleton

Replies: 0
Views: 67,498

December 30, 2021, 11:14:24 AM
by stepleton

CPU board versions and revisions?

Started by bmwcyclist

Replies: 0
Views: 61,134

March 23, 2025, 06:45:06 PM
by bmwcyclist

Twiggy Springs

Started by sigma7

Replies: 0
Views: 21,649

September 28, 2025, 05:01:25 PM
by sigma7

Twiggy Analog Board Rev F1 Schematic

Started by sigma7

Replies: 0
Views: 2,709

June 21, 2026, 03:46:34 PM
by sigma7